The World of Angry Birds is a book released in 2013 published by Rovio Books and Puffin Books, is a Guide of Angry Birds and a activity book.
The book provides the following description:
Welcome to Piggy Island, home to the Angry Birds, Bad Piggies... and the mysterious Mighty Eagle.
In this Official Guide to the World of Angry Birds, Mighty Eagle takes you on a tour of the magical island, introducing you to all the heroes, villains and places.
Featuring interviews with the Birds and the Pigs, a history of famous feud and the stories behind Angry Birds, Angry Birds Seasons and Angry Birds Space.